diff --git a/features/font-family-ui.yml b/features/font-family-ui.yml
new file mode 100644
index 00000000000..aa71aae75ec
--- /dev/null
+++ b/features/font-family-ui.yml
@@ -0,0 +1,10 @@
+name: UI fonts
+description: The `ui-serif`, `ui-sans-serif`, `ui-monospace` and `ui-rounded` values for the `font-family` CSS property use device-default user interface fonts for text.
+spec: https://drafts.csswg.org/css-fonts-4/#ui-serif-def
+caniuse: extended-system-fonts
+group: fonts
+compat_features:
+  - css.properties.font-family.ui-monospace
+  - css.properties.font-family.ui-rounded
+  - css.properties.font-family.ui-sans-serif
+  - css.properties.font-family.ui-serif
diff --git a/features/font-family-ui.yml.dist b/features/font-family-ui.yml.dist
new file mode 100644
index 00000000000..7973d518a22
--- /dev/null
+++ b/features/font-family-ui.yml.dist
@@ -0,0 +1,13 @@
+# Generated from: font-family-ui.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+status:
+  baseline: false
+  support:
+    safari: "13.1"
+    safari_ios: "13.4"
+compat_features:
+  - css.properties.font-family.ui-monospace
+  - css.properties.font-family.ui-rounded
+  - css.properties.font-family.ui-sans-serif
+  - css.properties.font-family.ui-serif